Year	% of total population
1960	24.323394272586306
1961	24.335964925085335
1962	24.30687123271017
1963	24.26584540756221
1964	24.220434909305695
1965	24.16729616639098
1966	24.11642863376236
1967	24.067775899839088
1968	24.02220085565501
1969	23.983130649190983
1970	23.933461925994752
1971	23.7801924768841
1972	23.64740951824518
1973	23.519224618069515
1974	23.404128306174865
1975	23.304656643945968
1976	23.225329773454227
1977	23.149387875030726
1978	23.07369402734702
1979	23.009505448894437
1980	22.95492983550624
1981	22.915524754915733
1982	22.879294027928257
1983	22.822899205075785
1984	22.74431432882489
1985	22.66368962441343
1986	22.581783605025475
1987	22.452117263627212
1988	22.332010023144715
1989	22.23764584282206
1990	22.206571262993208
1991	22.361091559843416
1992	22.786508529359683
1993	23.28265386554495
1994	23.820001589165866
1995	24.39987837971664
1996	25.035406812424533
1997	25.597901541365264
1998	26.163623328066986
1999	26.78007209841474
2000	27.45580494212901
2001	28.1703463205388
2002	28.678971465321055
2003	29.110090693406924
2004	29.54877671218497
2005	29.99255138207044
2006	30.4418457086065
2007	30.885850802664706
2008	31.303620715118747
2009	31.71063704150371
2010	32.12647365050533
2011	32.52853818860647
2012	32.91883928268518
2013	33.306763741271794
2014	33.63077288903759
2015	33.79313065112306
2016	34.33638814344845
2017	35.09689385337803
2018	35.5787528120819
2019	35.8708183776919
2020	36.176168172175714
2021	36.5446033325389
2022	36.9497069692507
2023	37.32325164681092